Hang-fire device for breech-loading ordnance.



IA. T. DAWSON AND G. T. BUCKHAM.

HANG FmE DEvlcE roR BHEECH LoAmNG oRDNANcE.

APPLlCATlON FILED NOV. 24, |915.

Patented May 6, 1919.

2 SHEETS-SHEET l.

2 a u--- .......HJ -LE M, ...|-mnnnnwhqhvll-l lllllll -LTT 7d A. T.nAwsoN AND G. T. ucKHAM.

HANG FIRE DEVICE FOR BREECH- LOADING OHDNANCE.

APPLICATION FILEDNoy. 24, 191s.

2 SHEETS- SHEET 2.

Myr,

Patented May 6, 1919;

' y .ToV all/whom t may ,concern g :y Be itV known that We, Sir

DAWSON, knight, and GEORGE THOMAS BUCK-- f. 11AM,` both'rsubjects of theKing of. Great WBritain, residing at Vickers House, Broad- ,Way;Westminster, .in the county of London, vFragland,have invented certainnewandusefuljlmprovements in or-Relating to Hang- -iq Fire Devices forBreech-Loading Ordnance, `ofwhichthe'following isl a specication. i@This invention relates to :the type of hang V fire device that`comprises asafety catch or ARTHUR TnEvoR bolt-.Which is carried by thegun itself and is -under the control of a: relatively stationary y f.member, this catch -beingadapted to engage i f with-the breechactuating hand lever or other suitable partof the'- breech actuatingmechanismfflfor the Vpurpose of `preventing the 4lat- ..fzterfrom being.operated to open thebre'ech f untilafter a discharge has occurred andthe" Y. guniswregaining `its-firing position during which timethestationary member displaces the catchl into a'lpositionto enable thehand fleverfto beoperatedltoopen the breech.v y l 'vf-.According to thisinvention the safety "catch or bolt carried-by the gun is underthecontrol of 'a device so constructed and arranged relation totherelatively station- .;aryfmemberthat it Will'be automaticallyopvrcI-'atedfto' displace; the catch or bolt axially ""andldisengage itvfrom .thebreech actuating o mechanism y'as the/gun y returns to its run-Y y Joutpo'sitionafter recoil and to 'hold the catch Y. v`or-ibolt invthis position when the device "-movesoclear of the-:said stationarymember '.towaid the'end of the run out movement of the" 'ifi' Thesaid'catch or bolt may be convktrolib y a spring and thedisengaging'device-may be inthe. lform of a cam Which is v A pivotallyconnected to the said catch or bolt and bears against a contiguous partof the [breech end of; thel gun. The said cam is "'i'a'dapted tobe"moved about its pivot by the stationary member '5(without ldisengaging ll :the-:catcherboltyduring the're'coilof the yfgunfso-faszto assume sucha position that on thefrun'ou't' ofthe gun,=it will bemoved in thereverser direction by the said member, to g-bring' a tpart *thereofagainst the contiguous .p'artfthe breech end of the gun and to `therebydisengage the catch 'to enabley the 4breech to be opened.

I p1-)In order thatl the said inventionfmay be `v`In the example shownis' in theform of a spring controlled plunger clearly understood, andreadily carried4 into y HANG-FIRE DEVICE Eon BEEEcII-LOADING oEDNANcEspecification of Letters Patong. l Patented May 6, 1919, Application modNovember 24, 1915.' seran No. 63,286.

effect', vWe vvilldescribe 4theV samemore fully with reference toV theaccompanying drawi'ngs,-in'v Which:-. f

. Figure 1 is aside elevation showing in a i more or less diagrammaticmanner the breech end of a gun'provided .with our im provements,t thisfigure also showing: the aforesaid stationary'member With Which thedisengaging device is adapted to coperate'; .infthisgure'thetripping camis shown in the positionitoccuples When the breech' is closed and thegun is in itsrun out position.'-

STATES 'PATENT OFFICE `A"E'riIU- ia TEEvoIt' DAWSON AND GEORGE THOMASBUGKIIAM yor WEs'rMINs'rEE., a .LoNDoN, ENGLAND, I.ssIGI\ToEs To vIcKERsLIMITED, 0E WESTMINSTEB.,

Figi 2 is :'arear-Ielevation of the` upper part of Fig. `1 with aportion in section on the line l, vlof Fig. 1.

. Figs. 3, 4 and 5 arey views similar to Fig.

1 showing the position of the parts during the recoil movement, the runout movement and theY final part of the run out movement of the gunrespectively.

Fig. 6 isa local section taken approxi` mately on the line 2, 2of Fig;5,and

Figs. 7 and 8 are views similar to Figs'. 5 and 6 showin during the`init1al opening movement of the breech bloc l In all these figures, Ais the breech end of the `gunandfB is the breech actuating hand lever. Crepresents the aforesaid spring controlled catch or bolt y'and Drepresents the cam constituting the disengaging device of the said catchor bolt; 'this cam is hereinafter referred lto as the tripping cam. Erepresents the aforesaid stationaryI member for operating the cam D.

tho @oooh or bolt o arrangedvertically'in' thebreech end of the gun andformed at its upper end with a beveled surface yc'Which engages With acorthe position of thek parts responding surface b (Fig. 2) onthebreechactuating lever yB during the closing movement ofV ythe'latter so as to[displace the plunger and enable it toengage'with a pocket or lrecess B(Fig-2) i-'n the hand lever. At

itslovver end the plunger C has an enlargement'fCfy to `whichl ftheaforesaid tripping cam D is pivotedv atfdgthis cam bearing 'against theunder surface `of the breech end ofthe gun. Thek trippin cam'lhasa-toepiece d which` engages '1w1`th` the stationary member 'E duringthe recoil of the gun and causes the tripping camD'to be angularlyxvdisplaced as shown-by Fig. 3. :This displacewhereupon the cam is movedbythe spring"V of the plunger C until a latsurface Z3 on ythesaidcam'bears against the under side of the breech end of the gun asshown in'lFig. 4; Y the toe-piece (Z on the cam is then in a positiontobe acted upon by the stationary mem-y ber E as the gun'performsitsrun`outmovef I ment (Fig. 4) ,l The tripping camv is retained inA thisposition bythe spring of the plunger C until during thev runroutmovement the toedisposed ina recesscut-in theSideof the piece rengageswith the 'stationary member @(Fig. 4) vand moves .the cam,` as shown byj Fig." 5,'-fin the reverse direction to that in` which it was moved bythe member-.during formed in the under surface ofthe breech end of thegun; the cam is thus retained in y this position. with the plungerdisengaged from the pocket or recess B in the "breech the breech blockD3 when the-latteris mov.- ing` in the direction-of tliearrowsy in Figs.6'

and 8 to its open position, to'movethe tripping arm Diin ananti-clockwise. direction and disengageitsy arms 'or projections-d4"`Afrom their notches b. (see Fig. '7), Where-y upon the spring of theplunger C causes they latter to rise and return tliencam to'fitsoriginal position shown by Fig. 1. Theopeia'ting arm Dserves as a;finger piece bymeans of which the cam VD can be displaced'zto dis-'-engage'the plunger C Afrom the breechactus ating hand lever By Whenrequired, and is breech end of the gun.

V-Vhen the invention' is as in .the

matic and quick firing type,v.the.aforesaid stationary v member Emaytake the form' of a projection lon the? operating paWlEf," itsposition being suchl that when the pavvlr iSjviIi the condition forlthe* semi-automatic .',Worliing of the gun, this )projectionWill"occupythe position shown by brolenlines in Fig. 34

. and will thus lie outof thepath of-y recoil of the toe-piece d. of`the trippingpcam' D. l

ating hand lever, vthe hang recatch-'carried by the gun and adapted -toengage with the*` tion to lrengage with rvthe,,breech/isiclosed. Y y

4. Inia' hang lire1'arrangementfor-orde nance, the combination with 4thebreech actu- '-atinghvand lever, thefhang relcatch carried i.; "bylthefgunyandadapte/dto engafgeWitl'rthefy example v`shown applied to`ordnancevof the 'semifauto-l ated by theA relatively stationary memberto nance` the combination with the breech actuating-hand lever, vthehang. fire catchy carried bythe gun' and adapted gto enga'gewith thehandlever., land the relatively stationary ,y member ,fordisplacingfsaid cat'chduring the j run-outmovement of the gunafterrecoil'of;

a device bearing *againstf a contiguous portionf' ofi-.the gun l and1bei1ig operated: by the: rel atively the ycato bri;

Ydisenga'ge' the "catch Vduring 'the' run out stationary member, to:disengage f .during the run .outlmovementfof thel gunand tohold it in'this position` when thedevioe njiovesclear ofthegsai'dfmember itowardthe endof the run. out movement. v recoil, whereby arms or.projectionsfcltonthe y -i cam` `are caused to engage in notches o.

` 'r 85 3. 'In :hang l'irearran-gementwfor' ord- Y nance, thecombinationwith the breechl a'ctu-l i atin hand lever, ,thefhang lirecatchucarriedv egun and: adapted to'engage yWith the" hand lever, andV'the relatively l stationaryv lnemberfor'displacing said catch duringthe Y g -runloutmovement of the gun afterfrecoll, of.`

af device-operating upon said catch and oper n -v i .ated by therelatively., stationary lmember 'to positiony when gthedevi'ce y movesclear lofxthe said f member to-Ylard ,ltheil end` df the :runoutlplacingsaid device during the-opening ofthe breech, to enable thecatchjtolassunie a posiy the handy lever Wl'lenv f hand i lever, 1' andthe relatively 'fstationary i lmeinber for: displacing-said:catch-during the Irunv out y movement 'Lot the gun f after recoil, ora-devi'ce'carried :by said.' catch andgoperl fyi' Aatedloyftherelatively stationary member.to"fl disengagel the, catch:during-the run outf i mentgoithepgun andto hold `it in thisiposi#v f.tion'V vWhenjthe device moves' clear of :thersaid meinbertowardthe'endofthe run outmove? 1* E, f, nient." 1 ',ff "in", ixf'fi nIn-'aj han-giredevice Vfor'ordn'ance,'the' 'K combination with'thebreechiactuatinghandY, "lever, the handfireicatch `carried by'thevi'gn vWhat We claim anddesire zto secure by Letters Patent of theUnited lStates is`:-" l y 1.In a hang -fre-V arrangement-.forordnance the combination-With thebreechactu- '.120 c Aand:adapted vtofe`I11fi9eWith the hand lever, Y v:andftherelatively stationary fmeniberjfor l displacing.said?y catch:durin-the rlmfioilt movenf'ient:ofthergunz after-recoih'of *ajde-vI 1:the gun andcarriedrby said catch, thisklei]` E, yvice,'h'eingoperatedby the relativelyfz'sta#" ff tionary'member to disengagethecatchdur# ,Y ling-the run.l out 'movementof 'the lgun andl n tof hold,`it f this :position Whenethe device `v`1K3 f I moves clear ofthe saidmember toward the end of the run out movement.

' 12 if" .6, In aV hang fire device for ordnance, the combination withthe breech actuating hand lever, the'hang fire lcatch carried by the gun'and' adapted to engage with the hand lever, `and the relativelystationary member for displacing said catch during the run out movementof the gun after recoil, of a device bearingagainst a contiguousportion/of the i' gun and carried by said catch, this device :beingoperated by the relatively stationary y*member to disengage the catchduring the v n lrun out movement of ythe gun and to hold it Y, `v`inthis position Whenthe device moves clear .of thesaid member toward theend ofthe v,out movement, and means for displacing. said device, duringthe opening of the ",fbreech, to. enable the catch to assume a posiition to re'e'ngage With the hand lever When 'y lthefbreech is closed.

A 7. In a hang ire device for ordnace, the

i combination VWith the breech actuating hand llever during the run outmovement of the y. Copies ofithis patentmay he obtained for f lever,thexhang fire catch carried by the gun y and adapted to engage With thehand lever,

and the yrelatively stationary member for displacing said catchduring.the run out movement of the gun after recoil, of a cam device 'bearingagainst a contiguous pOrtOIl 0f' the T gun l and being operated by therelatively stationary member to displace the catch longitud'inally outof engagement With the hand gun and to bring a part of said cam devicev, into engagement with part of the gun to hold the device in thisposition When it moves clear of the said'member toward the end of therun out movement.

8. In a hang fire devicefor ordnance, the combination ywith the breechactuating hand lever, the spring controlled hang re catch carried by thegun and adapted to engage with the hand lever, and the relativelystationary member for displacing said catch during the run `out movementof the gun after recoil, of 'a cam device bearing against a contiguousportion of the gun and being operated by the relatively stationarymember to displace the catch longitudinally out of engagement with thehand lever during the run out movement of the gun and to bring a part ofsaid cam device into engagement with part of the gun tohold the devicein this positionL When it movesvclear ofthe said member toward the endof the run out movement, said cam device having an arm adapted to beoperated upon by an inclinedy surface on the breech block, during theopening movement of the latter, to liberate said device and permit thecatch to assume a position to rengage With the hand lever When thebreech is closed.

In testimony whereof We aliix our signatures in the presence of tWoWitnesses.

ARTHUR TREVOR DAWSON. GEORGE THOMAS BUCKHAM.

Witnesses: l

JNO. R. CAsWnLL, GLADYS M. BARDEN.

ve cents each, by addressing the Commissioner of Patents, Washington,'.D. C. l* f

